I really don't want to use coco. I really like using products that are made literally in the next town. The compost I am using is made from the garden waste collected in our recycling bins and local recycling centres, taken to a depot 15 miles away, processed and sold back to the community at cost. My manure comes from a Livery stables, just up the road. A 20KG sack of rotted manure costs me £1, 150L of compost costs me £15, no delivery needed I literally drive by the point of production on my daily commute. So for £16 I have enough medium for at least a couple of full runs. The same in Coco would cost me nearly £39 plus delivery, the nearest shop that sells it is 60 miles away. With Coco I would have to use nutrients from day one, with my mix I can go for weeks on plain water and then get by on some very basic feed I can get from literally anywhere.